VOL-2189 update voltha-openolt-adapter to use voltha-protos=v2.0.1 and voltha-lib-go=v2.2.9;
Release v2.2.1

Change-Id: I527d6541f9d8b7df8504d886a01163c7e57bdd77
diff --git a/adaptercore/openolt_eventmgr_test.go b/adaptercore/openolt_eventmgr_test.go
index dcfcef3..8012318 100644
--- a/adaptercore/openolt_eventmgr_test.go
+++ b/adaptercore/openolt_eventmgr_test.go
@@ -22,7 +22,7 @@
 	"time"
 
 	"github.com/opencord/voltha-openolt-adapter/mocks"
-	oop "github.com/opencord/voltha-protos/go/openolt"
+	oop "github.com/opencord/voltha-protos/v2/go/openolt"
 )
 
 func mockEventMgr() *OpenOltEventMgr {